The molarity of a solution obtained by mixing 750 mL of 0.5 M HCl with 250 mL of 2 M HCl will be:

0.975 M

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0.875 M

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1.00 M

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1.75 M

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Solution

The correct option is B 0.875 M
$M_{m i x} V_{m i x} = M_{1} V_{1} + M_{2} V_{2} M_{m i x} = \frac{M_{1} V_{1} + M_{2} V_{2}}{V_{m i x}} = \frac{(0.5 \times 750) + (2 \times 250)}{1000} = 0.875 M$

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The molarity of a solution obtained by mixing 750 mL of 0.5 M HCL with 250 mL of 2 M HCL will be

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